Pulverizer and concentrator



(No Model.)

I. W. HEIL-IG. PULVER-IZER AND GONGENTRATOR.

Patented Dec. 31,1889,

Nv PETERS. Pholo-hlhcguphm. Wnshmglon, L)v c j UNITED; STATES- PATENT OFICE...)

IRWIN W. HEILIG, OF PQTTSTOWN, PENNSYLVANIA, ASSIGNOR OF ONE} HALF TOSAMUEL SNODGRASS, DELAWARE, OHIO.

I PULLVERIZER AND C'ONCENTRATOR.

sPEcmicA'rI'oN forming part of Letters Patent No. 418,514, datedDecember 31,1889.

Application filed April 3, 1889.

To all whom it may concern:

Be it known that I, IRWIN W. I'IEILIG, of the city of Pottstown, countyof Montgomery, State of Pennsylvania,have invented an Improvement inPulverizers and Concentrators; and I hereby declare the following to bea full,-clear, and exact description of the same.

My inventionrelates to a device for pulverizing and concentratinggravel, earth, or material containing val'uableor precious metals, andis especially adapted for use in placer mines, where the earthy materialneeds to be broken and pulverized in order to separate it from the morevaluable gold which is contained therein; and my invention consists ofthe constructions and combinations of devices which I' shall hereinafterfully describe and claim.

Referring to the accompanying drawings for a more complete explanationof my invention, Figure 1 is a plan view of my apparatus with a part ofthe conveyerbox broken away to show the construction of the pulverizerand carrier. Fig. 2 is a side View, a part of the side of theconcentrator being broken away. Fig. 3is a vertical section of apart ofthe concentrator. conveyor-box.

A is a box or casing, which is made of considerable length, properlysupported in the horizontal position and having a fiat hopper at or nearone end. This casing may be made in various ways. I have found a verysuitable way to make it of heavy planking, rectangular in form, buthaving the inner angles filled, so that its'interior presents anoctagonal form. Within this box is journaled a shaft B, extendingfrom-endto end through the center, and this shaft has fixed in it radialprojecting arms 0, which are preferably composed of iron aboutfive-eighths of an inch thick by one and one-half inch wide and of sucha length as to project about six inches from the outside of the shaft,which may be made of timber or other material and is about six inches indiameter, thus giving suflicient hold for the arms, which are driveninto holes made in the sides of the shaft. These holes afiefbored so asto form a spiral around the s a t. a

Fig. l is a transverse section of the Serial No. 305,893. (No model.)

By means of a pulley upon one end of the shaft, which projects beyondthis inclosingcase, the shaft and arms are caused to rotate with anydesired speed, being preferably from two hundred revolutions a minuteupward. The angular faces of the projecting arms 0 strike the materialwhich is delivered into the casing from the hopper, so as to beat andpulverize it, separating it also from any material which may cling toit, and the angular arrangement of the faces of these arms enables themto gradually advance the material from the feed end toward the dischargeend of the casing, which casing may be upward of twenty feet in length,if desired. This pulverizing may take place in a dry condition, or watermay be admitted with the material, so that it will form a pulp ofgreater or less consistency, and the mass when it reaches the dischargeend of the casing falls upon an inclined chute D. This chute extendsfrom the shaking-table E and discharges upon it. The table and the chuteare suspended by ropes or chains from a convenient point above,

and are caused to shake or oscillate eudwise by means of a cam F,mounted upon a transverse shaft G, which has a chain or sprocket wheelkeyed to it, so that it may be caused to rotate directly by means of achain passing over the wheel H upon the end of the pulverizing-shaft.

The bottom of the shaking-table is made of sheet metal fixed betweensides suificiently above its level to prevent the escape of the materialover the sides, and this bottom is provided with depressions I atintervals from one endto the other, and between the depressionsundulating or wave-like surfaces, as shown at J, which greatly assistthev separation of the valuable material from the lighter wastematerial. At the loweror discharge edge of each of these depressions isformed or fitted a projecting ledge K, which extends across the table atthis point, and, projecting over the depression I, forms a sort ofpocket, withinwhich the heavier gold or valuable ma terial will besettled by the constant shaking motion of the table and will beprevented from escaping down the sluice. The lighter materials will becarried down by the water which is delivered upon the table or sluiceuntil it is discharged atthe lower end and es' capes through a wasteway.

The apparatus being set in motion, it will be manifest that theconcentrator will be oscillated in proportion to the speed of thepulverizer, so that the material which is delivered into and operatedupon by the pulverizer will be discharged upon the incline, and fromthence to the concentrating-table, the operation of which will beproportionate to the speed of the pulverizer, thus enabling it to takecare of all the material which is supplied to it.

Having thus described my invention, What I claim as new, and desire tosecure by Letters Patent, is-

1. The combination, with a pulvcrizer and its operating mechanism, of avibrating con- IRWIN W. HEILIG.

Witnesses:

T. L. RIDDLE, S. K. SNODGRASS.

